Couples with children: 40%, a higher share than 99% of compared French towns
In Champagne-sur-Oise, 16% of households are headed by a manager or professional, beside 9.4% in the typical compared French town. Meanwhile, the town has fewer residents aged 65 and over than 90% of compared French towns, at 15%. Census day 2023: 5,036 residents and 1,910 households locally. Locally, 6.6% of households have no car.
Throughout this page, the Val-d'Oise median and the France median are the median of compared communes (those with an overall grade), each figure its own median. Source: INSEE, census 2023.
What stands out about the people of Champagne-sur-Oise
A town of families
40% of households are couples with children and 10% single parents with children; 22% of residents are under 15. Households ↓
Written from INSEE’s census 2023 on this page, against compared French towns.
+7% since 2012, a pace 61% of compared French towns didn’t match
Residents at INSEE’s last three censuses, each recast in the 2026 commune boundaries. France has no yearly estimate by commune between censuses.
2012 to 2023
2017 to 2023
Half of Champagne-sur-Oise is under 39.3, younger than 83% of compared French towns
Shares of residents by age at the 2023 census.
Age groups · share of residents
Median age of the 3,798 compared French towns
■ Champagne-sur-Oise 39.3. The median compared French town: 44.
Residents aged 15 to 24: 12% here and 11% in the typical compared French town.
Women and men · all residents
51% women, 49% men
About 95 men for every 100 women. Median share of women: Val-d'Oise 51.5%, France 51.8%.
Below 98% of compared French towns: 23% of households are one person living alone
A household is everyone who shares a main home (résidence principale). Household types come from INSEE’s fuller sample of a quarter of census forms.
Against the Val-d'Oise median and the France median
Living alone · share
On average, 2.6 people share a household. In the typical compared French town, just over a third of households are one person living alone. 10% of households are single parents, more than in 54% of compared French towns.
Champagne-sur-Oise ranks above 65% of compared French towns on households in social housing: 16%
Every home the census counted: main residences, second homes and occasional dwellings (INSEE counts them together), and empty homes. Owning and renting are on Cost of living.
All homes · share of homes
Type of home
Cars per household · share of households
Where 30% of homes are flats in the typical compared French town, Champagne-sur-Oise has 26%. Across Champagne-sur-Oise, 1% of homes are second homes. 8.6% of homes stand empty, more than in 70% of compared French towns. By way of comparison, 12% of households rent social housing (HLM) in the typical compared French town.
A typical living standard of €30,040 a year
The standard of living (niveau de vie) is a household’s disposable income after taxes and benefits, divided by its consumption units (UC) to allow for its size and make-up: 1 for the first adult, 0.5 for each other person 14 or older, 0.3 for each child under 14.
Medians of compared communes. Source: INSEE, Filosofi 2023.
Per consumption unit, half of residents live on more than €30,040 a year: higher than in 84% of compared French towns. Below the poverty line: 9.0% of residents.
Only 9.2% of households are headed by a manual worker in Champagne-sur-Oise
Households by the socio-professional group (PCS) of their reference person, INSEE’s own categories. Jobs and commuting are on the Work & commute page.
Households by reference person’s group · share of households
With households headed by a retired person at 28%, Champagne-sur-Oise is behind 73% of compared French towns on that count. As a reference point, 14% of households are headed by a manual worker in the typical compared French town.
Each household is counted once, by the occupation of its reference person (usually the oldest working adult).
Immigrants make up 9.2% in Champagne-sur-Oise, more than in 67% of compared French towns
INSEE publishes two measures, which overlap but aren’t the same. Neither is the UK’s “born abroad”.
Share of residents · census 2023
Immigrant (immigré)
Born abroad, not French at birth. Someone stays an immigrant after becoming French. A French citizen born abroad (for example in Algeria before 1962) is not one.
Foreign national (étranger)
Not a French citizen today, wherever born. A child born in France to foreign parents can be a foreign national without being an immigrant.
The figure for foreign nationals is 6.4% in Champagne-sur-Oise and 4.3% in the typical compared French town. The median compared commune in Val-d'Oise has 16%; immigrants here make up a share higher than in two thirds of compared French towns. Immigrants make up 6.5% in the typical compared French town.
INSEE publishes no country of birth or ethnicity by commune in these tables, and the census doesn’t ask about religion.
More married residents than 86% of compared French towns: 49%
Residents 15 and over by how they live: the census asks both the legal status and whether people live as a couple.
Residents 15 and over · share
Single residents are rarer here than in 54% of compared French towns. Set beside that, 43% of residents 15 and over are married in the typical compared French town.
Fewer adults with no qualification than 75% of compared French towns: 15%
Highest diploma of residents 15 and over who have left education, in French terms: the levels don’t map one-to-one to UK or U.S. ones.
Highest diploma · 15 and over, out of education
Here 36% of adults out of school hold a higher-education qualification, where the figure in the typical compared French town is 30%. The comparison figure for adults with no qualification is 19% in the typical compared French town.
41 French towns of 4,981 to 5,092 people: this is the 6th youngest
The 40 compared French towns nearest in population, by median age. Hover for each one’s second homes and immigrants; click for its page.
Ages run from 31.7 in Bezannes to 67.3 in Saint-Georges-de-Didonne.
4 in 6 nearby towns have a higher median age than Champagne-sur-Oise
The nearest towns of 2,500 or more, colored by median age. Source: INSEE, census 2023.
| Town | Median age | 65+ | Second homes | Immigrants |
|---|---|---|---|---|
| Champagne-sur-Oise | 39.3 | 15% | 1% | 9.2% |
| L'Isle-Adam 12,493 · 1.8 mi | 47.1 | 27% | 3.5% | 10% |
| Persan 14,359 · 1.9 mi | 32.9 | 10% | 0.3% | 27% |
| Chambly 9,959 · 2.1 mi | 40.1 | 17% | 0.9% | 8.6% |
| Beaumont-sur-Oise 10,232 · 2.4 mi | 36.4 | 14% | 1.4% | 19% |
| Parmain 5,655 · 2.4 mi | 42.6 | 18% | 2.2% | 8.4% |
| Presles 4,017 · 2.9 mi | 44.3 | 19% | 1.1% | 8.2% |
Health, work, housing and schools
What this data can and can’t tell you
- Census 2023. INSEE’s census is a rolling survey: a fifth of small communes each year, 8% of homes in large ones each year. “2023” pools the surveys of 2021 to 2025, so the figures describe the town around 2023, not on one day.
- Medians of compared communes. The comparisons are the median of the département’s compared communes and of France’s (those with an overall grade), each figure its own median: not the total for the département or for France, which large cities pull towards their own figures.
- Immigrants and foreign nationals. INSEE’s two measures: an immigrant was born abroad without French nationality; a foreign national isn’t French today. Neither is a count of people born abroad, which INSEE doesn’t publish by commune.
- Second homes. Homes used for holidays or weekends, with occasional dwellings (kept for work, for example), which INSEE counts together. Their owners are counted where they live, not here.
- Standard of living. INSEE’s Filosofi: disposable income per consumption unit, from tax and benefit files, 2023. The poverty rate is the share of residents below 60% of France’s median. Not published for the smallest communes.
- What France doesn’t ask. The French census asks nothing about ethnicity, religion, language or health, so this page has no such section.
Questions about who lives in Champagne-sur-Oise
What is the population of Champagne-sur-Oise?
5,036 at INSEE’s 2023 census, 7% more than in 2012 (4,692).
How old are Champagne-sur-Oise’s residents?
The median age is 39.3, younger than 83% of compared French towns. 27% are under 18 and 15% 65 or older.
How many second homes are there in Champagne-sur-Oise?
21, with occasional dwellings: 1% of all homes, against 2.1% for the median compared French town.
How many immigrants live in Champagne-sur-Oise?
INSEE counts 460 immigrants (born abroad, not French at birth), 9.2% of residents, and 320 foreign nationals (6.4%). The medians of compared French towns are 6.5% and 4.3%.
What is the median income in Champagne-sur-Oise?
€30,040 a year per consumption unit in 2023 (median of compared French towns €25,970); 9.0% of residents live below the poverty line. Source: INSEE, Filosofi.
Sources: INSEE, census 2023 (population, ages, households, homes, marital status, diplomas, immigrants, foreign nationals, employment), 2026 geography · INSEE, Filosofi 2023 (standard of living, poverty) · IGN Admin Express (boundaries) · Medians and percentiles: TownRatings, over compared French towns, updated November 4, 2026. Under the Licence Ouverte / Open Licence 2.0 (Etalab).
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.